and then the home and presidential library of native Franklin D. Roosevelt. It narrows to two lanes at the built-up area that marks the center of town, then opens up a turn lane for traffic entering the third of the town's tourist attractions, Vanderbilt Mansion National Historic Site. Past Hyde Park, the road narrows to two lanes again as traffic becomes more local. The area recalls Westchester County with many wooded tracts and stone walls at roadside. Through here it has been running fairly close to the river, but after Staatsburg the highway begins to veer inland again. The land to the west, between road and river, forms the Hudson River Historic District, the largest in the country and another National Historic Landmark. US 9 is at least east of the river when it reaches Rhinebeck, the next town along the route, where NY 308 heads off to the east, and close to the Old Rhinebeck Aerodrome aviation museum. At Weys Corners, the X-shaped intersection north of Rhinebeck, northbound traffic to the river and the Kingston–Rhinecliff Bridge via NY 199 typically bears left onto NY 9G. Southbound traffic, in turn, takes NY 199 itself to the river when the two meet in Red Hook further ahead. Two blocks north of that junction are the Village Diner, originally named the Halfway Diner since it was roughly halfway along US 9 from New York City to Albany, and the Elmendorph Inn, a mid-18th century counterpart to the diner. North of Red Hook, the land around the road begins to open up into farms and fields, offering frequent views of the Catskill Escarpment across the river. This terrain continues into Columbia County, which US 9 enters beyond Red Hook. The road remains two lanes, with mostly local traffic and no stop signs or traffic lights, until the oblique four-way intersection in Bell Pond, into the county. Here, NY 23 joins US 9 as it heads west, which in turn joins NY 9H on the northern roadway while NY 82 departs to the southeast. west, in Greenport, US 9 turns northward again toward Hudson, the county seat, passing the St. Lawrence-owned cement plant whose expansion was recently blocked by community activists after seven contentious years. On the east fringe of Hudson's historic downtown, US 9 intersects the northern terminus of NY 9G and NY 23B. NY 23B runs concurrent with US 9 for a